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The instance is terminated then fails to start with GEN0 process returns PC:0xFE04 [ADDR:0x0] on DB Instance. (Doc ID 2184308.1)

Last updated on FEBRUARY 02, 2024

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.


The instance fails to start with the following error on GEN0 process ==>
ORA-07445: exception encountered: core dump [PC:0xFE04] [SIGSEGV] [ADDR:0x0] [PC:0xFE04] [Invalid permissions for mapped object] []

GEN0 trace file shows ==>

========= Dump for incident 109719 (ORA 7445 [PC:0xFE04]) ========
----- Beginning of Customized Incident Dump(s) -----
Dumping swap information
swap info: free_mem = 5652.57M rsv = 96.00M
alloc = 175.75M avail = 24576.00M swap_free = 24400.25M
Exception [type: SIGSEGV, Invalid permissions for mapped object] [ADDR:0x0] [PC:0xFE04, {empty}] [flags: 0x0, count: 1]
iar: 0x000000000000fe04 lr: 0x0000000110d11c34
msr: 0xa00000000000d032 cr: 0x0000000022204822
r00: 0x0000000110d11c1c r01: 0x0ffffffffffee6f0 r02: 0x00000001216bc840
r03: 0x0000000000000000 r04: 0x0000000000000000 r05: 0x0000000000000000 <<== r03 shows "0" value
r06: 0x0ffffffffffeef80 r07: 0x0000000000000000 r08: 0x0000000000000000
r09: 0x8080808080808080 r10: 0x7f7f7f7f7f7f7f7f r11: 0x0000000000000008
r12: 0x8080808080808080 r13: 0x0000000121730a20 r14: 0x0000000000000001
r15: 0x0ffffffffffff680 r16: 0x0ffffffffffff690 r17: 0x0800200140000000
r18: 0x0ffffffffffffed0 r19: 0x09fffffff000e608 r20: 0xbadc0ffee0ddf00d
r21: 0xbadc0ffee0ddf00d r22: 0xbadc0ffee0ddf00d r23: 0x0fffffffffffbe00
r24: 0x0000000000000005 r25: 0x0000000000000004 r26: 0x0fffffffffffaaf8
r27: 0x0000000000000000 r28: 0x0000000121b6b3d0 r29: 0x0fffffffffffa818
r30: 0x0fffffffffffa730 r31: 0x000000011314b738
(0xfdf4) stb r8, 2(r3)
(0xfdf8) 31 40
(0xfdfc) 11 0
(0xfe00) lbz r8, 0(r4)
> (0xfe04) stb r8, 0(r3) <<== HERE
(0xfe08) 30 0
(0xfe0c) addis r5, r0, 65278
(0xfe10) addis r6, r0, 32639
(0xfe14) 11 0

 GEN0 process stacks shows ==>


<- sighandler
<- 1219ABB10 <- 000000000000FE04 <- 000000000 <- 000000000 <- 8080808080808080
<- 7F7F7F7F7F7F7F7F <- clsrapii_rem_dep3 <- 000000000 <- 8080808080808080 <- 7F7F7F7F7F7F7F7F




 No changes made


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